Adjustable support arm



FIG. 1 is a perspective view of a first embodiment of an adjustable support arm showing our new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view thereof, with the parts of the adjustable support arm in a different configuration; and,

FIG. 9 is a perspective view thereof, with the parts of the adjustable support arm in a different configuration.

The dash-dot lines shown in FIGS. 1-9 represent boundary lines between claimed and unclaimed subject matter, with the dash-dot lines themselves representing unclaimed subject matter. The dashed lines shown in FIGS. 1-9 are included for the purpose of illustrating environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for an adjustable support arm, as shown and described. 